{"id":8464,"date":"2020-07-24T09:51:13","date_gmt":"2020-07-24T16:51:13","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=8464"},"modified":"2021-04-05T09:57:12","modified_gmt":"2021-04-05T16:57:12","slug":"association-of-social-distancing-population-density-and-temperature-with-the-instantaneous-reproduction-number-of-sars-cov-2-in-counties-across-the-united-states","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/07\/24\/association-of-social-distancing-population-density-and-temperature-with-the-instantaneous-reproduction-number-of-sars-cov-2-in-counties-across-the-united-states\/","title":{"rendered":"Association of Social Distancing, Population Density, and Temperature\u00a0With\u00a0the Instantaneous Reproduction Number of SARS-CoV-2 in Counties Across the United States"},"content":{"rendered":"<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"45\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Ruben et al\u00a0<\/span><span data-contrast=\"auto\">analyzed the effect of social\u00a0distancing, population density, and temperature on\u00a0<\/span><span data-contrast=\"auto\">effective reproduction number (<\/span><span data-contrast=\"auto\">R<\/span><span data-contrast=\"auto\">t<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">in\u00a0<\/span><span data-contrast=\"auto\">211 counties in 46\u00a0<\/span><span data-contrast=\"auto\">US\u00a0<\/span><span data-contrast=\"auto\">states and the District of Colombia (total population 178,892,208)<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-contrast=\"auto\">Mean peak reduction in visits to non-essential businesses in early- to mid-April was 69% and a 50% decrease in such visits was associated with a 45% decrease in\u00a0<\/span><span data-contrast=\"auto\">R<\/span><span data-contrast=\"auto\">t<\/span><span data-contrast=\"auto\">. A 70% reduction in such visits brought 96% of such counties below R<\/span><span data-contrast=\"auto\">t\u00a0<\/span><span data-contrast=\"auto\">&lt;1.\u00a0<\/span><span data-contrast=\"auto\">Median<\/span><span data-contrast=\"auto\">\u00a0case incidence and fatality rates were 10 times higher for the top decile of population density than for the lowest quartile<\/span><span data-contrast=\"auto\">\u00a0(<\/span><span data-contrast=\"auto\">mean R<\/span><span data-contrast=\"auto\">t<\/span><span data-contrast=\"auto\">\u00a0in the first two weeks being 5.7\u00a0<\/span><span data-contrast=\"auto\">versus<\/span><span data-contrast=\"auto\">\u00a03.1<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">. Relative R<\/span><span data-contrast=\"auto\">t<\/span><span data-contrast=\"auto\">\u00a0decreased as\u00a0<\/span><span data-contrast=\"auto\">temperatures<\/span><span data-contrast=\"auto\">\u00a0warmed from\u00a0<\/span><span data-contrast=\"auto\">32\u00b0F to 52\u00b0F (<\/span><span data-contrast=\"auto\">O<\/span><span data-contrast=\"auto\">\u00b0C<\/span><span data-contrast=\"auto\">\u00a0to 11<\/span><span data-contrast=\"auto\">\u00b0<\/span><span data-contrast=\"auto\">C<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">, increased between\u00a0<\/span><span data-contrast=\"auto\">52\u00b0F and 68\u00b0F (<\/span><span data-contrast=\"auto\">11<\/span><span data-contrast=\"auto\">\u00b0<\/span><span data-contrast=\"auto\">C and 20<\/span><span data-contrast=\"auto\">\u00b0<\/span><span data-contrast=\"auto\">C<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">, then again declined<\/span><span data-contrast=\"auto\">\u00a0above\u00a0<\/span><span data-contrast=\"auto\">68\u00b0F (<\/span><span data-contrast=\"auto\">20\u00b0C<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><i><span data-contrast=\"none\">Rubin et al. (July 2020). Association of Social Distancing, Population Density, and Temperature\u00a0With\u00a0the Instantaneous Reproduction Number of SARS-CoV-2 in Counties Across the United States. JAMA Network Open.\u00a0<\/span><\/i><a href=\"https:\/\/doi.org\/10.1001\/jamanetworkopen.2020.16099\"><span data-contrast=\"none\">https:\/\/doi.org\/10.1001\/jamanetworkopen.2020.16099<\/span><\/a><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ruben et al\u00a0analyzed the effect of social\u00a0distancing, population density, and temperature on\u00a0effective reproduction number (Rt)\u00a0in\u00a0211 counties in 46\u00a0US\u00a0states and the District of Colombia (total population 178,892,208).\u00a0Mean peak reduction in visits to non-essential businesses in early- to mid-April was 69% and a 50% decrease in such visits was associated with a 45% decrease in\u00a0Rt. A 70%&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2020\/07\/24\/association-of-social-distancing-population-density-and-temperature-with-the-instantaneous-reproduction-number-of-sars-cov-2-in-counties-across-the-united-states\/\">Read more<\/a><\/div>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[],"topic":[22],"class_list":["post-8464","post","type-post","status-publish","format-standard","hentry","category-article-summary","topic-non-pharmaceutical-interventions"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/comments?post=8464"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8464\/revisions"}],"predecessor-version":[{"id":8465,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/8464\/revisions\/8465"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=8464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=8464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=8464"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=8464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}